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| 1 | /* |
| 2 | * vstring.c - Variable-length strings |
| 3 | * |
| 4 | * Copyright 2012 by Werner Almesberger |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | |
| 13 | #include <stdlib.h> |
| 14 | #include <string.h> |
| 15 | |
| 16 | #include "vstring.h" |
| 17 | |
| 18 | |
| 19 | void append_n(char **res, int *res_len, const char *s, int len) |
| 20 | { |
| 21 | if (!len) |
| 22 | return; |
| 23 | if (!*res) |
| 24 | *res_len = 0; |
| 25 | *res = realloc(*res, *res_len+len+1); |
| 26 | if (!*res) |
| 27 | abort(); |
| 28 | memcpy(*res+*res_len, s, len); |
| 29 | *res_len += len; |
| 30 | (*res)[*res_len] = 0; |
| 31 | } |
| 32 | |
| 33 | |
| 34 | void append(char **res, int *res_len, const char *s) |
| 35 | { |
| 36 | append_n(res, res_len, s, strlen(s)); |
| 37 | } |
| 38 |
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